Due to the humidity in the air after the summer rains, the solvent in the adhesive will take a large amount of heat away from the surface of the adhesive during the evaporation process. The water vapor in the air condenses on the surface to form a white fog when it cools down.
The water-based interface formed by the white mist is incompatible with the oil-based interface formed by the adhesive, so that the various chemical forces formed between the two interfaces are small. Therefore, the bonded joint has no strength and the bonding fails. To solve such problems, the baking method should be used to remove the surface water mist heating until the glue layer is dry to sticky hands and sticky feeling can be bonded.